The concentration of normal saline

The concentration of normal saline is typically 0.9%, meaning that each 100ml of normal saline contains 0.9g of sodium chloride. The osmotic pressure of a 0.9% sodium chloride solution is approximately equal to that of human plasma and tissue fluid, making it the same concentration as the liquid environment surrounding human cells. Normal saline has various clinical applications, such as for fluid replacement, electrolyte balance regulation, and wound irrigation. Its isotonic characteristic ensures that it does not cause cellular dehydration or excessive water absorption upon administration, thus maintaining normal cell morphology and function. Additionally, normal saline can serve as a solvent for dissolving or diluting other medications, facilitating intravenous or other routes of administration. Although the preparation of normal saline is relatively simple, strict adherence to medical guidelines and procedures is essential in clinical practice to ensure its safety and effectiveness.